Measuring instrument.



A. F. BEAULIEU.

MEASURING INSTRUMENT.

APPLICATION msn sEPT.r6,19.15. RENEWED DEG. 2o. leu.

Patented Fb. 12, 1918.

FQQZ. i/

SNVENTOH ATTO? NEY ALFRED F. BEAULEU, OF CHICAGO, LLINOIS.

MEASURING INSTRUMENT.

Application filed September 16, 1915, Serial No. 51,057. .Renewed December 20, 1917.

To all 'whom t may concern Be it known that I, ALFRED F. BEAULIEU, acitizen of the United States, residing at Chicago, in. the county of Cook and State of Illinois, have invented certain .new and useful Improvements in Measuring Instruments, of which the following is a specification.

My invention relates to measuring instruments and more particularly to a combined bevel protractor square and divider.

The primary object of my invention resides in the provision of an instrument for use by draftsmen, carpenters, machinists and mechanics in general embodying novel means for removably holding a square in various adjusted positions or angles through use of a protractor as well as means coperating with these parts for adjustably hold ing dividers in a predetermined position thereby providing an eiiicient combination that can be easily and quickly adjusted and used in various capacities for assisting the operator in maintaining and ascertaining different angles and measurements.

Another object of my invention resides in the provision of a device of the character described that is simple in construction, efiicient in operation and one that can be manufactured and placed upon the market at a minimum cost.

Other objects as well as the nature, characteristic features and scope of my invention will be more readily understood from the following description taken in connection with the accompanying drawings and pointed out in the claims forming a part of this specification.

In the drawings:

Figure 1 is a top plan Aview of my invention;

Fig. 2 is a longitudinal central sectional View of my invention;

Fig. 3 is an end elevational view of the invention.

Referring more particularly to the drawings in which similar reference numerals designate like or corresponding parts throughout the different views, I provide a semicircular supporting protractor plate 1, the curved edge 2 of which is provided with radially arranged graduations 8. An elongated blade 4 is formed integral with and projects from intermediate the ends of the curved edge, said blade being provided on both Sides with graduations 5 and which Specication of Letters Patent.

Fatented Feb. 12, 1913..

serial No. 208,151.

blade is arranged in position perpendicular to the straight edge 6 of the plate 1. The common center of the semicircular plate is provided with an opening 7 through which passes from the under surface of the plate abolt 8 which serves to pivotally connect a metallic square 9 thereto at the point of juncture of the arms of the square. This square has a long arm 10 of a configuration similar to the blade et, the short arm 11 thereof terminating adjacent the graduations 3 of the plate. A pointer 13 projects from intermediate the ends of the free edge of the short arm and facilitates ascertaining the various desired angles through the medium of the long arm 10.

In order to maintain the long arm 10 in various adjusted angles, .l have provided a bolt 13 which is slidably arranged in a semicircular slot 14 in the plate l, said slot being arranged in spaced circumferential relation with the curved edge 2. The free threaded end of the bolt extends through the short arm 11 adjacent the free end thereof and is adjustably engaged by a knurled nut 15 which coperaties with the head of the bolt arranged on the under surface of the plate 1, for removably maintaining the square in position.

Similarly formed divider legs are pivotally connected about the bolt 8 and removably maintained in adjusted positions through the medium of a knurled nut 17, the divider legs are of a width similar to the width of the blade 5 and long arm 10, the rounded pointed ends 18 of the legs terminating in alinement with the blade 4 and long arm 10 as illustrated to advantage in the accompanying drawings. The legs 16 and the arms of the square 17 when swung about their pivot may be arranged so that both of their side edges lie in alinement with the straight edge 6 of the plate l, this arrangement permitting of the device being used as a T-souare.

The operation of my invention is as follows:

'In using the device as a protractor, the legs 16 may be swung to project away from the straight edge, this permitting of the square bolt carried by the short arm freely sliding throughout the entire length of the slot 14 thereby permitting of various desired angles being obtained. It is of course understood that when the desired angle has been ascertained by tightening the knurled nut 15, the long arm 1'() will be removably maintained in the desired position of angular adjustment. In providing a carpenters square, the outer side edge of the long` arm is arranged in alineinent with the straight edge 6 and the short arm is arranged in alinement with the blade Il, whereupon the nuts 15 and 17 are tightened. By swinging the divider legs so that one of their side edges are arranged in alinement with the straight edge 6 and by tightening the nut 17 a Tsquare is provided. The divider legs are held adjusted in various positions through the medium of the nut 17, the graduations 3 provided on the curved edge facilitating the adjustment thereof.

Although I have shown and described the preferred embodiment of my invention, I desire to be understood that I am not to be limited to the exact details shown; however, I desire that great stress be laid upon the arrangement of the novel cooperation existing between the square, protractor plate, blade and divider legs for providing a carpenters square and a T-square as well as theindicator coacting with the graduations for determining different angles.

From the above description taken in connection with the accompanying drawings, it can easily be seen that I have provided a device that is simple in construction, containing but a few simple parts that can be cheaply manufactured and assembled and when assembled can be placed upon the marhet-and sold at a minimum cost.

It will be understood that the above description and accompanying drawings comprehend only the preferred embodiment of my invention and that various minor changes in detail of construction, pioportion and arrangement of the parts may be inade within the scope of the appended claims and without sacrificing any of the advantages of my invention.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is:- Y

1. A measuring instrument comprising a graduated protractor plate, a graduated blade extending therefrom, a square body on the plate, and means for removably holding the arms of the square in various positions of angular adjustment with respect to the plate and blade.

2. A measuring instrument comprising a protractor plate, a blade extending therefrom, a square, a pair of divider legs, and means for removably clamping the divider legs and the long arm of the square on the plate to provide a T-square.

3. A measuring instrument including a v(Jellies of this patent'may be obtained :or

Athe graduations, and means for adjustably maintaining the long arm in angular adjustment.

4. A measuring instrument including a semicircular protractor supporting `plate,

having a curved edge and provided with graduations along its curved edge, said plate being also provided with a semicircular slot arranged in spaced circumferential relation with the curved edge, a blade'projecting from intermediate the ends of the curved edge and arranged perpendicular, to the straight edge, a square pivoted to the center of the plate and having one arm shorter than the other, the long arm of the square being of a configuration similar to the configuration of the blade, a pointer on the free edge of the short arm for association with the graduations along the'curved edge of the plate, a bolt slidably arranged in the slot and projecting through the short arm for guiding the movement of the square,'a nut on the bolt for removably maintaining the pointer in a predeterminedl position Ato consequently maintain the long arm at a predetermined angle, andthe long arm of the square adapted to be arranged in alinement with the straight cdge of the plate, at times to provide a carpenters square.

5. A measuring instrument including a protractor supporting plate havingV a curved edge and a straight edge, a blade projecting from intermediate the ends of the curved edge and arranged perpendicular to the straight edge, a square pivotally associated with the plate, one arm of said square being shorter than the other, an indicator on the free edge of the short arm for association with the curved edge of the protractor plate, means for adjustably clamping the short arm in various positions to consequently maintain the long arm of a square at a desiredangle, divider legs -pivotally associated with the plate and square, and means for clamping the divider legs and the long arm of the square to provide a T-square.

Intestimony whereof I aiiX my signature in presence of two witnesses.

ALFRED F. BEAULIEU.

Witnesses Anoiir Knauss, Bacini vI eatiss.

ve cents each, by ,addressngtlie Commissioner of llatentsi.

Wesleeten- ,CJP 

